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Title:Inovativna sinteza poroznih glicidil metakrilatnih zrn s tehniko suspenzijske polimerizacije HIP emulzije : diplomsko delo visokošolskega strokovnega študijskega programa I. stopnje
Authors:ID Vozelj, Tilen (Author)
ID Paljevac, Muzafera (Mentor) More about this mentor... New window
ID Krajnc, Peter (Comentor)
Files:.pdf VS_Vozelj_Tilen_2025.pdf (5,24 MB)
MD5: DD37D11AB6B123F2F2955567DDC83A29
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V okviru diplomskega dela smo razvijali metodo za sintezo visoko poroznih polimernih kroglic na osnovi GMA (glicidil metakrilat) in EGDMA (etilenglikol dimetakrilat). Za dosego visoke poroznosti v kroglicah smo izvedli suspenzijsko polimerizacijo emulzije z visokim deležem notranje faze. Ker so emulzije viskozni sistemi, smo najprej proučili vpliv različnih deležev notranje faze na viskoznost emulzije in posledično na morfologijo polimeriziranih materialov. Ugotovili smo, da z zviševanjem deleža notranje faze narašča viskoznost emulzije, velikost por v končnih produktih se povečuje, stene por se tanjšajo, povezovalne pore postajajo večje in bolj sferične oblike, specifična površina pa se poveča z 2,4 na 3,1 m²/g. V naslednjem koraku smo pripravili suspenzijo emulzije z visokim deležem notranje faze tako, da smo k homogeni emulziji dodali vodno raztopino stabilizatorja, suspenzijo temeljito premešali in izvedli fotopolimerizacijo. Kot končni produkt smo dobili polimerne kroglice, med katerimi so bile nekatere skoraj popolnoma sferične, druge pa bolj cilindrične oblike. Kroglice so ohranile odprto celično morfologijo. Pripravljene materiale smo karakterizirali z različnimi tehnikami, vključno s FTIR spektroskopijo, porozimetrijo, vrstično elektronsko mikroskopijo in elementno analizo, kar je omogočilo podrobno razumevanje njihove strukture, morfologije in kemijskih lastnosti.
Keywords:porozni polimeri, poliHIPE, HIP emulzija, glicidil metakrilat, suspenzijska polimerizacija
Place of publishing:Maribor
Place of performance:Maribor
Publisher:[T. Vozelj]
Year of publishing:2025
Number of pages:1 spletni vir (1 datoteka PDF (IX, 35 str.))
PID:20.500.12556/DKUM-93450 New window
UDC:66.095.26:544.773.3(043.2)
COBISS.SI-ID:250662147 New window
Publication date in DKUM:23.09.2025
Views:209
Downloads:40
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Licences

License:CC BY-NC-ND 4.0, Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
Link:http://creativecommons.org/licenses/by-nc-nd/4.0/
Description:The most restrictive Creative Commons license. This only allows people to download and share the work for no commercial gain and for no other purposes.
Licensing start date:01.07.2025

Secondary language

Language:English
Title:Innovative synthesis of porous glycidyl methacrylate beads using the suspension polymerization technique of HIP emulsion
Abstract:In this work we have developed a method for the synthesis of highly porous polymeric beads based on GMA (glycidyl methacrylate) and EGDMA (ethylene glycol dimethacrylate). In order to achieve a high porosity in the beads, we carried out a suspension polymerisation of an emulsion with a high internal phase fraction. Since emulsions are viscous systems, we first investigated the effect of varying the internal phase fraction on the viscosity of the emulsion and consequently on the morphology of the polymerised materials. We found that increasing the internal phase fraction leads to a higher viscosity of the emulsion, larger pore sizes in the final products, thinner pore walls and larger, more spherical connecting pores, while the specific surface area increased from 2.4 to 3.1 m²/g. In the next step, we prepared a suspension of the high internal phase emulsion by adding an aqueous solution of a stabiliser to the homogeneous emulsion, mixing the suspension thoroughly and performing photopolymerisation. The final product consisted of polymeric beads, some of which were almost perfectly spherical, while others had a more cylindrical shape. The beads retained an open-cell morphology. The materials produced were characterised using various techniques, including FTIR spectroscopy, porosimetry, scanning electron microscopy (SEM) and elemental analysis, which allowed a detailed understanding of their structure, morphology and chemical properties.
Keywords:porous polymers, polyHIPE, HIP emulsion, glycidyl methacrylate, suspension polymerization


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